Measuring magnetic field saturation and its site dependence in a recording head with a magnetic force microscope

Author

Abe, Masayuki ; Tanaka, Yoichiro

Author_Institution

Osaka Univ., Japan

Volume

40

Issue

3

fYear

2004

fDate

5/1/2004 12:00:00 AM

Firstpage

1708

Lastpage

1711

Abstract

We directly imaged magnetic field saturation from the gap corners of a recording head by using magnetic force microscopy (MFM). We measured the magnetic force interactions associated with the variation of the magnetic field with respect to the applied current with high spatial resolution and studied the site dependence of the saturation behavior of the head. Our experiments show that the magnetic field saturation starts at current values as low as 3 mA at the gap edge corners of the head, while the gap edge center saturated at about 10 mA.

Keywords

magnetic field measurement; magnetic force microscopy; magnetic heads; magnetic recording; applied current; direct imaging; gap corners; gap edge center; high spatial resolution; magnetic field saturation; magnetic field variation; magnetic force interactions; magnetic force microscope; magnetic recording; recording head; saturation behavior; site dependence; Current measurement; Disk recording; Force measurement; Magnetic field measurement; Magnetic fields; Magnetic force microscopy; Magnetic forces; Magnetic heads; Magnetic recording; Spatial resolution; Magnetic field saturation; magnetic force microscope; magnetic recording; recording head;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.826618

Filename

1298949